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Kirtan Dua
Subject: Science
, asked on 26/4/18
Q.4 A planet is having a mass twice to that of earth's mass and its radius 4 times that of the earth's radius . Determine four times the accelerations due to gravity at that surface of this planet . Acceleration due to gravity at the earth's surface is 10 ms
^{-2}
Answer
1
Iffat Ruhani
Subject: Science
, asked on 20/4/18
What is mono-alkyl?
Answer
1
Balaji
Subject: Science
, asked on 19/4/18
how did the disposal of nuclear waste pose a these on plant life and animal Life
Answer
1
Yakini Jain
Subject: Science
, asked on 16/4/18
What does a cell do
Answer
4
Yakini Jain
Subject: Science
, asked on 16/4/18
Why there is a need to garness non-conventional sources of energy? Give two reasons.
Answer
1
Yakini Jain
Subject: Science
, asked on 16/4/18
Solve this:
Answer
1
Yakini Jain
Subject: Science
, asked on 16/4/18
What does SPV stands for
Answer
2
Yakini Jain
Subject: Science
, asked on 16/4/18
What is the source of energy in sun and stars?
Answer
1
Yakini Jain
Subject: Science
, asked on 16/4/18
Solve this
Q. Name the fission product of
${}_{92}{}^{255}U$
. When it is bombarded with a neutron.
Answer
1
Yakini Jain
Subject: Science
, asked on 16/4/18
Ques3
Answer
2
Devansh The Rock Star
Subject: Science
, asked on 15/4/18
How does a geothermal plant works?
Answer
1
Devansh The Rock Star
Subject: Science
, asked on 11/4/18
How would our lives change if we could no longer get electricity supply?
Answer
1
Fatima Nadeem
Subject: Science
, asked on 10/4/18
Qno. 13 plz explain the answer in detail
Q.113. A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is
(a) equal to the time of fall
(b) less than the time of fall
(c) greater than the time of fall
(d) nothing can be decided
Answer
1
Shreya Bharti
Subject: Science
, asked on 8/4/18
Ans
14.
A particle is moving in a straight line with initial velocity u and uniform acceleration f. If the sum of the distance covered in t
^{th}
and (t+1)
^{th}
second is 100 m, then its velocity after t sec in m/s is
(A) 20 (B) 30
(C) 50 (D) 80
Answer
1
Shreya Bharti
Subject: Science
, asked on 8/4/18
Ans
13.
A body starts from rest and moves with a uniform acceleration then the ratio of distance covered by it during 5
^{th}
second of its motion to the distance travelled in 5 second of motion is
$\left(A\right)\frac{16}{25}\left(B\right)\frac{9}{16}\phantom{\rule{0ex}{0ex}}\left(C\right)\frac{25}{9}\left(D\right)\frac{9}{25}$
Answer
1
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^{-2}Q. Name the fission product of ${}_{92}{}^{255}U$. When it is bombarded with a neutron.

Q.113. A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is

(a) equal to the time of fall

(b) less than the time of fall

(c) greater than the time of fall

(d) nothing can be decided

14.A particle is moving in a straight line with initial velocity u and uniform acceleration f. If the sum of the distance covered in t^{th}and (t+1)^{th}second is 100 m, then its velocity after t sec in m/s is(A) 20 (B) 30

(C) 50 (D) 80

13.A body starts from rest and moves with a uniform acceleration then the ratio of distance covered by it during 5^{th}second of its motion to the distance travelled in 5 second of motion is$\left(A\right)\frac{16}{25}\left(B\right)\frac{9}{16}\phantom{\rule{0ex}{0ex}}\left(C\right)\frac{25}{9}\left(D\right)\frac{9}{25}$